Abstract

Nanoantenna-enhanced ultrafast emission from colloidal quantum dots as quantum emitters is required for fast quantum communications. On-chip integration of such devices requires a scalable and high-throughput technology. We report self-assembly lithography technique of preparing hybrid of gold nanorods antenna over a compact CdSe quantum dot monolayer. We demonstrate resonant and nonresonant gold nanorod antenna-enhanced radiative and anisotropic decay. Extensive simulations explain the mechanism of the decay rates and the role of antenna in both random and compact monolayers of quantum dots. The study could find applications in quantum dot display and quantum communication devices.

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Acknowledgment

We acknowledge the Department of Science and Technology (Nanomission), India, for the financial support and Advanced Facility for Microscopy and Microanalysis, Indian Institute of Science, Bangalore, for access to TEM measurements. M. Praveena acknowledges UGC, India, for the financial support.